Louis emile courtin



(No Model.)

L. E. GOURTIN. CLOCK STRIKING MECHANISM.

3 9 m 00 W E T N m w 5 V 1 W m g u Y A B d e W t e p t v 2- M. G H P @lalalallzlzla W UNITED STATES PATENT OFFICE.

LOUIS EMILE COURTIN, OF PARIS, FRANCE.

CLOCK STRIKING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 503,310, dated August 15, 1893.

Application filed July 20, 1892. Serial No. 440i (N model-i To all whom it may concern: contact with the arm 1 of the forked lever 1, Be it known that I, LOUIS EMILE OOUR- 2, it raises the latter, which in turn raises the TIN, clockmaker, a citizen of the Republic of lever by acting on the pin 3 on this lever France, residing in Paris, France, have in- 15. A lever 5 fixed on the same axiset with 5 vented certain Improvementsinaud Relating the lever 15, is, at the same time, moved out to Clock-Movements, of which the following of the path of a pin 6 on the wheel 12 carried isa specification. by the shaft 17 of the striking train. The

My invention relates to clock movements, striking train starts, but is immediately and it consistsin so constructingand combinstopped by the projection 10, on the arm 2,

:0 ing the striking mechanism that at the half which projects into the path of a pin on one hours the clock will repeat the number preof the wheels of the striking train in the viously struck but on adifferent bellor gong, ordinary way. At the time the lever 15 is so as to distinguish the half hour strike from raised out of the way of the rack let, this rack the hour by the diiterence in the tones or drops-the extent of the dropping being lim- 15 sounds of the bell or gongs. ited by an arm 8 on the arm 7 coming in con- My improvements can be applied to existtact with the scroll wheel 9, which limits the ing clock movements and in the accompanyextent of its fall according to the hour to be ing drawings I have shown it applied to the struck. lVhen the pin 13 passes the arm 1, 7o well-known Courtin clock movements. the lever 1, 2 drops to its normal position thus 20 In the accompanying drawings, Figure l is freeing the striking mechanism from the prothe front View of a clock-movement showing jection 10. The striking train now running, parts of the striking mechanism. Fig. 2 is a the arm 16 on the shaft 17 raises 'the rack side view of the said movement, showing the 14 one tooth at each revolution, the rack betwo bells in section. Fig. 3 shows separately ing prevented from falling back by the lever 25 the part designed to act upon the arbor. Fig. 15 which engages in the teeth of the rack.

4 representsthe hammer having a double ac- When the arm 16 has raised the rack untilits tion. lowest tooth is above the lever 15, this lever The arbor a which carries the hammerb b 15 drops under the lowest tooth of the rack, is mounted in the two disks A and A of the thus turning the pivot 4 sufficient to cause 0 clock movement. It is subjected like thearthe arm 5 to come into the path of the pin 6 bors heretofore used to the action of a spring which arrests the motion of the strikingtrain.

4* designed to move it back to its original po- It will thus be seen that the construction and sition after the rotation, and it is moreover operation of thestriking mechanism are simiadapted to be displacedlongitudinally under lar to those of the usual Courtin movement,

3 5 the action of acamc with which its extremityv which strikes one at each half hour, except is always in contact, by reason of the pressthat by placing the pins 13 equidistant from ure exerted by a spring 0" acting upon its the center of the wheelfand in proper relaother extremity. This cam appertains to a tion to the scroll-wheel 9, and graduating the 0 double lever pivoted at 0, the arm d of which latter, I am enabled to have the hour num- 40 is encountered and oscillated by a pin 6 fixed bers automatically repeated at the half hours.

upon one of the wheels f of the dial train, The special hammer of the bell mechanism which on its opposite face possesses two diastrikes one or the other of the bells T and T metrically opposite pins 13, 13, at equal diswhich gives a different sound. The hours are 5 tances from the center designed to act upon struck upon the bell T, while they are re- 5 the arm 1 of the bell mechanism at each half peated at the half hours by means of the bell hour. The usual rack 14 always actsin com- T giving a different sound. This effect is bination with a scroll wheel 9 which limits its produced by the displacement of the arbor a fall according to the hour to be struck. The which moves the active part of the hammer 10o pivoted arm 7 which carries the rack 14 is either opposite to the bell T or the bell T.

50 normally raised so that the lowest tooth of The double arrangement of the hammer is the rack 14 rests upon the upper end of the such that when its part b strikes the bell T, lever 15. When one of the pins 13, comes in the part b will miss the bell T, and vice versa.

It is evident that the advantage of my system lies notonlyiu the repetition of the hours at the half-hours by a bell giving a difierent sound, but also, and more especially in the production of this effect with a device of the greatest simplicity.

I may apply my invention to all kinds and sizes of clock-movements and combine it with any kinds of bells.

I claim as my invention 1. In striking clocks, the combination with the striking mechanism of means for automatically repeating the hour numbers at the half hours, and means for sounding a bell or gong at the half hours different from that sounded at the hours, all substantially as described.

2. In striking clocks, the combination of two bells and one hammer, with means substantially as described for automatically repeating the hour numbers at the half hours, and means for shifting the hammer from one bell to the other, substantially as and for the purpose set forth.

3. In striking clocks, the combination of two bells, and an arbor carryingthe hammer, with a lever provided with a cam at one end adapted to move the said arborlongitudinally and a pin on one of the dial wheels adapted to act upon the said lever, all substantially as and for the purposes set forth.

4. In striking clocks, the combination of the rack 1-1 and mechanism for maintaining the rack out of the position it would naturall take, with two diametrically opposite pins on one of the wheels of the dial train and equidistant from the center of the wheel and adapted to act on the said mechanism to release the rack every half hour, all substantially as set forth,

5. In striking clocks, the combination of the two bells and one hammer, with two diametrically opposite pins on one of the wheels of the dial train and equidistant from the center of the wheel, and adapted to act alike at each half hour on the striking mechanism, and means for shifting the hammer from one hell to the other, substantially as and for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS EMILE COURlIN.

Witnesses:

CHARLES PIERRE, LEON FRANCKEN. 

